EP0393373A3 - Optischer Heterodynempfänger - Google Patents

Optischer Heterodynempfänger Download PDF

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Publication number
EP0393373A3
EP0393373A3 EP19900105377 EP90105377A EP0393373A3 EP 0393373 A3 EP0393373 A3 EP 0393373A3 EP 19900105377 EP19900105377 EP 19900105377 EP 90105377 A EP90105377 A EP 90105377A EP 0393373 A3 EP0393373 A3 EP 0393373A3
Authority
EP
European Patent Office
Prior art keywords
signal
optical
local oscillator
heterodyne receiver
intermediate frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19900105377
Other languages
English (en)
French (fr)
Other versions
EP0393373A2 (de
Inventor
Karl Josef Dipl.-Ing. Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0393373A2 publication Critical patent/EP0393373A2/de
Publication of EP0393373A3 publication Critical patent/EP0393373A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/614—Coherent receivers comprising one or more polarization beam splitters, e.g. polarization multiplexed [PolMux] X-PSK coherent receivers, polarization diversity heterodyne coherent receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/64—Heterodyne, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

Die Erfindung betrifft einen optischen Heterodynempfänger (1000) mit gleichzeitiger Auswertung der Signal- und Spie­ gelfrequenz, wobei die Lokaloszillatorleistung optimal genutzt wird. In einer optischen Mischstufe (800) wird ein zirkular polarisiertes Lokaloszillatorsignal (2) mit einem linear polarisierten Empfangssignal (1) zu je gleichen Signalanteilen auf zwei optische Mischsignalwege (211, 212, 221) aufgeteilt. In einem Mischsignalweg befindet sich eine Lambdahalbeplatte. In einem Polarisationsstrahlteiler (130) und einer elektro­ nischen Zwischenfrequenzstufe (900) erfolgt die weitere Ver­ arbeitung zu Zwischenfrequenzausgangssignalen (81, 82). Eine Abweichung von der vorgesehenen linearen Polarisation des Empfangssignals (1) verursacht eine berechenbare Verschlech­ terung der Spiegelfrequenzunterdrückung.
EP19900105377 1989-04-21 1990-03-21 Optischer Heterodynempfänger Withdrawn EP0393373A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913241 1989-04-21
DE3913241 1989-04-21

Publications (2)

Publication Number Publication Date
EP0393373A2 EP0393373A2 (de) 1990-10-24
EP0393373A3 true EP0393373A3 (de) 1992-03-11

Family

ID=6379200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900105377 Withdrawn EP0393373A3 (de) 1989-04-21 1990-03-21 Optischer Heterodynempfänger

Country Status (2)

Country Link
EP (1) EP0393373A3 (de)
JP (1) JPH02296227A (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245026A2 (de) * 1986-05-08 1987-11-11 AT&T Corp. Optische Überlagerungsmischer mit Spiegelfrequenzunterdrückung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245026A2 (de) * 1986-05-08 1987-11-11 AT&T Corp. Optische Überlagerungsmischer mit Spiegelfrequenzunterdrückung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS. vol. 22, no. 15, 17 July 1986, STEVENAGE GB pages 825 - 826; DARCIE ET EL: 'Optical Heterodyne Image-Rejection Mixer' *
FOURTH INTERNATIONAL CONFERENCE ON INTEGRATED OPTICS AND OPTICAL FIBER COMMUNICATION, TECHNICAL DIGEST June 1983, TOKYO, JP pages 386 - 387; OKOSHI ET AL: 'Polarization-Diversity Receiver for Heterodyne /Coherent Optical Fiber Communications' *
FOURTH INTERNATIONAL CONFERENCE ON INTEGRATED OPTICS AND OPTICAL FIBER COMMUNICATION, TECHNICAL DIGEST, Tokyo, 27. - 30. Juni 1983, Seiten 386-387; T. OKOSHI et al.: "Polarization-diversity receiver for heterodyne/coherent optical fiber communications" *

Also Published As

Publication number Publication date
JPH02296227A (ja) 1990-12-06
EP0393373A2 (de) 1990-10-24

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